I don't have the time and don't want to invest the money into feeding free choice for the first year.

Do y'all have any good suggestions as to a good protein supplement that I can use in a timed feeder? I'm even thinking about getting the All Seasons timed protein feeder. One big drawback with that is that food may accumulate in the tray until the deer get used to it. But I guess the same thing with a free choice tube?

Lamco are great feeders. If you don't have that kind of coin, the new All Seasons is an economical option in a timed protein feeder. Both offer galvanized hoppers for long term rust resistance.

As to the actual pellet, lots of good choices. Just depends on what is available locally. I like Lyssey & Eckles myself, but Purina, Record Rack and others offer good blends too. Just check out the trace mineral packages. Not all proteins are created equal.